Patent Certification
The three national patents
A new mixer-settler extraction equipment
( Patent No.:201120167983.X)
One kind of stone coal, vanadium and additives added concentrated sulfuric acid heap leaching method of vanadium
( Patent No.:201110208874.Z)
One kind of stone coal decarburization acid solution after oxidation to vanadium leaching method
( Patent No.:ZL 2009 1 0042526.5)